MAKE CONNECTIONS Based on Figure 9.17, explainwhy hydroponically grown plants would grow muchmore slowly if they were not sufficiently aerated.
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MAKE CONNECTIONS Based on Figure 9.17, explain
why hydroponically grown plants would grow much
more slowly if they were not sufficiently aerated.
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- Drought is the main constraint for agriculture sector. What is the major consequence of water insufficiency in plant? *SCIENTIFIC INQUIRY • INTERPRET THE DATA A Minnesotagardener notes that the plants immediately bordering a walkwayare stunted compared with those farther away. Suspectingthat the soil near the walkway may be contaminated from saltadded to the walkway in winter, the gardener tests the soil. Thecomposition of the soil near the walkway is identical to thatfarther away except that it contains an additional 50 mM NaCl.Assuming that the NaCl is completely ionized, calculate howmuch it will lower the solute potential of the soil at 20°C usingthe solute potential equation:ΨS = -iCRTwhere i is the ionization constant (2 for NaCl), C is themolar concentration (in mol/L), R is the pressure constant[R = 0.00831 (L · MPa)/(mol · K)], and T is the temperature inKelvin (273 + °C).How would this change in the solute potential of the soilaffect the water potential of the soil? In what way would thechange in the water potential of the soil affect the movementof water in or out of the roots?Plant transpiration Experiment Design Plan- investigate the factors that impact plant transpiration
- In a shallow coastal ecosystem dominated by seagrasses, nutrient limit primary production under low nutrient ( oligrtropihc) conditions while light becomes the limiting factor under high nutrient ( eutrophic) condition. In the conceptual model given explain why sea grasses, macroalgae and poluplantkon are in the position of the graph. Kindly explain your answerEVOLUTION CONNECTION Imagine taking the plant out ofthe picture in Figure 37.12. Write a paragraph explaining howsoil bacteria could sustain the recycling of nitrogen before landplants evolvedRecite four forms of renewable energy and for each provide teo major negative environmental impacts with solutions respectively
- Draw a CHP system with decentrialised biofuel plantsThe practice of crop rotation uses nitrogen fixation to create fertile fields. First, a plant without a nitrogen-fixing relatiorhip, such as corn, is planted. After the harvest, a nitrogen-fixing plant replaces the initial crop. Instead of harvesting the nitrogen-fixing plant, however, it is plowed under. The cycle continues in this manner. Why would nitrogen-fixing plants be plowed under instead of harvested? * To increase water retention. O Nitrogen-fixing plants are not a food crop. To increases usable nitrogen in the soil. To decrease bacteria in the soil.SCIENTIFIC INQUIRY Acid precipitation has an abnormallyhigh concentration of hydrogen ions (H+). One effect ofacid precipitation is to deplete the soil of nutrients suchas calcium (Ca2+), potassium (K+), and magnesium (Mg2+).Suggest a hypothesis to explain how acid precipitationwashes these nutrients from the soil. How might you testyour hypothesis?
- Give me examples of a growing medium devoid of any carbon source and poor in nutrients?Many plants that produce nodules for nitrogen-fixing bacteria are common on disturbed sites. Explain how these plants might simultaneously compete with and facilitate other plant species.Distinguish between a source and a sink. How can the same plantpart act as both a source and a sink?